No.181 - Agilent 34401A Multimeter TFT Conversion

Off the back of my other TFT upgrades some folks asked for the HP/Agilent/Keysight 34401A, and I just happened to have one that needed a better display since the VFD was quite worn. Thanks to the person at the following GitHub address that had managed to decode the HP/Agilent/Keysight 34401A protocol and set me on my way: https://github.com/openscopeproject/H... Download the Pcb Gerbers, Hex file & Instructions/BOM here: http://www.ianjohnston.com/misc/34401... The Visual Studio source code is here: https://github.com/Ian-Johnston/34401... TFT upgrade info on my webpage: Please refer to this page for my disclaimer and any compatibility issues if they exist or known. https://www.ianjohnston.com/index.php... DISCLAIMER: This video is educational only, so if you decide to do the same yourself then you are on your own, I can't be held responsible for any problems/issues/damage/injury that may occur if you decide to follow this blog and try it yourself. DISCLAIMER: This video is educational only, so if you decide to do the same yourself then you are on your own, I can't be held responsible for any problems/issues/damage/injury that may occur if you decide to follow this blog and try it yourself. #electronicscreators If you prefer Odysee for my videos then visit my channel here - https://odysee.com/@IanScottJohnston:... 🎵 My Playlists: ▶    • Multimeter Repairs   ▶    • Test Equipment Repairs   ▶    • Other Electronic Repairs   ▶    • Electronic Shorts   ▶    • Power Supply Repairs   ▶    • Workshop stuff   ▶    • Test Equipment Reviews   ▶    • Function Gen Repairs   Visit my website for lots more - https://www.ianjohnston.com Help me make more of these videos: Pledge using Patreon -   / iansjohnston   Donate using PayPal - https://www.paypal.me/IanSJohnston Follow me on Twitter -   / iansjohnston   My video gear = Panasonic HC-X1500 4k/60 with VW-HU1 handle, Deity V-Mic D4 Mini supercardioid microphone.